Locomotive.



No. 885,055. I PATENTED APR. 21, 1908.

E. G. KETGHUM.

LOGOMOTIVE.

APPLICATION FILED JULY s, 1907.

Fig.1.

Witnesses: Irweht or:

Erncsb C. Ifclclmm,

I by M ERNEST O. KETCHUM, OF BOSTON, 'ZtlASSAOHUSETTS.

LOCOMOTIVE- Specification of Letters Patent.

Patented April 21, 1908.

Application filed July 3, 1907. Serial No. 381,967.

To cl! whom it may concern..-

lie it known that I, Enxns'r (l. lin'rcnnrr, a citizen of the UnitedStates of America,

and a resident of Boston, in the county of 5 Sulfolk and State ofMassacluisctts, have invented certain new and useful Improvements inliocmnotivi-is, of which the follow ing is a specification.

This invention relates to electric locomotires and has for its objectthe production of a locomotive of this class in which the devices forgenerating electricity are wholly located upon the platform thereof.

It consists in mounting upon a platform driven by suitable motors agenerator of electricity capable of being driven at a ver high speed andconnecting therewith a hig power turbine engine ca wide of drivingdirectly a dynamo of this class.

It consists further ofmounting upon said movable platform the dc icesfor generating steam for said turbine and condensing the exhausttherefrom.

It consists further in certain novel features of constructi .n. andarrangement of parts which will be readily understood by reference tothe description of the drawings and to the claims hereinafter given.

Of the drawings: Figure 1 represents a sec tional view of an electriclocomotive embodying the features of this invention. Fig. 2 represents ahorizontal section of the same on'hne 2-2 on. Fig. 1, and Fig. 3 reresents a section of the dynamo used in the ocomotive and an elevationof the motor operated thereby and showing in connection therewith thewire connections for making the electric circuit.

Similar characters designate like )arts throughout the several figuresof the draw ings.

In the drawings, ll) represents a car of any well-known constructionprovided with the platform 11. mounted u )011 suitable trucks 12 thewheels 13 of which are adapted to be moved along the rails 14 by a motor15 secured upon either truck 12 and geared to an axle 16 in anywell-knmvn manner.

Mounted upon the platform 1] is a direct current dynamo 1.7, as forinstiuiec one of the homtmolar type the preferred l'orm being that whichis shown in Letters Patent No. 826,668, granted to me July 24, 1906,this dynamo being capable of being revolved at a very high rate ofspeed, thus erniitting it to be drivendirect roni a log 1 speed motor isuch as a turbine engine TiliStlYllflIllO l consists of theend...]')iecrs 19 supported on E suitable legs and/provided withinwardly ex tending cylindrical hubs which form cores or poles for thefield. Inteiposed between and connecting said end pieces 19 are aplurality of members 20 united thereto by any suitable means.Intermediate the end pieces 19 is a member 21, sup orted by said members20,either face of w 1ich is rovided with a pole in alinement with eaciother and the poles of the end ieces 19. Interposed between the poles 0said intermediate member 21 and the poles of the end ieces 19 andseparated therefrom by suit-ab e air spaces is an armature 22, saidarmature being driven by a shaft 23 su ported in hearings in the endpieces 19. T e shaft 23 is driven direct by means of the turbine engine18 or other high speed motor. Thearmature 22 is composed of a pluralityof disks of high ma netic permeability separated from eac 1 other byinsulating lates.

The outer pair of isks are mounted directly upon an insulating tubesecured directly to the revoluble shaft 23 and this pair of disks. isconnected by a tubular member extending from the inner face of one tothe inner face of thle gther. This tubular member is surrounde' i whichis mounted the next air of disks which pair is in turn connected y meansofa second tubular member surrounding the iiisulating tube. All of thepairs of disks are mounted in a similar manner and the Whole mentioned.Any' portion ofthe disks may be cut out from the circuit by means of theopcratii'in of one of the switches of a controller in an obvious manner.Inasmuch as the poles are all in alincment and the armature is also inalinemeiit therewith, it is obvious that the working parts of thearmature when in operation always move in a plane at right angles to thelines of force and are constantly cutting the same without producing atube of insulating material uponv ries, all as shown and described inthe patent construction is as shown in the aforesaid I dynamo to be usedinconnectionwith a sin-.

- while air from the exterior of the car is passt e use of gears orother intermediate defvicesF'IBy such a construction, the dynamo,

driven direct by the turbine engine, promits of its use upon a movableplatform -to and described. 20

through a condenser 27 beneath the motor steam to be again used in theturbine 18.

through "the condenser from which it is "where it' in the direction ofthe arrow A on Fig. 2, said 'of electricity conveyed to the motor todrive the car. It is obvious that bysuch a con- 7 struction as Is hereinshown an electricloco gine, also mounted u on said gle" stage im ulsesteam turbine, thearmature of the ynamo being mounted directly u on themain driving shaft thereof without duces a greatly increased voltage andperdrive the motor therefor as isherein shown Steam is admitted to theturbine 18 through'the pipe 26 from a boiler 27 which may be of anywell-known construction: The exhaust steam from said turbine passes andfrom which it is forced by means of the um'p 28through the pipe 29 againinto the Boiler 27 in which it is again changed into Mounted'upon theplatform 11 is av cooling tower 30 of any well-known constructionrovided atthe bottom thereof with a ta 31 from which cool wateris drawnthrough the pipe 32 by means of the pump 33 and forced again ejected!through the pipe 34 to be returned to the to of the cooling tower 30asses romsuitable nozzles over inclined s elves 35 or other similardevices ing-transversely through said tower, the air bei drawn in bymeans of the side wings 36 whic cause a current of air to be forcedthrough the cooling tower as the car moves air being emitted from theopposite side of the car or locomotive.

Interposed between the dynamo 24 and the motor 15 is a controller 37which regul'ats, by means of the switch 25, the amount motive mayreadily be producedwhich-will generate its .own electricity without theas sistanceof instrumentalities removed from said car. As the steam isgenerated in a de? vice mounted upon the platform of the locomotive anddrives the high speed turbine enlatform, which engine-in turn drives ata high speed the dynamo; as, moreover, means are also provided onthesame platform for condens-' mg the exhaust steam emitted from the mo-.tor and for forci it through the boiler to be utilized again'in t eengine; and as provision t is also made for suitable cooli devices tooperate the condenser for said ex aust steam, 1t 15 ObVlOUS that thelocomotive is complete in itself. This dispenses with the necessity ofstationary plants which have to be con nected by means of overhead orunderground trolleys to a motor carried upon a movable platform with agreat loss of electric energy,

this loss in the present construction being reduced to a minimum.Moreover, owing to tween the dynamo and turbine, less prime power isneeded to secure the requisite amount of electric energ less fuel isrequired, causing a great economy thereof and in the storage spacetherefor. I

" It is obvious that the engine and dynamo will continue "to operatewithout change of speed. at all times, even when the train is stopped atat station and as a consequence no additional power is required to startthe engine as is usually the case.

The man advantages of a locomotive driven by e ectricity, which may passover any track whether electrically installed or not, it is believedwill be fully appgrent without any further descri tion.

Having thus descri ed my invention, I claim: Y

lIThe combination of a' car platform; trucks therefor; an electric'motorfor driving said trucks; a dynamo on said platform;

. a steam turbine on said platform for driving said dynamo; means forcreating a continuous-c rculation of steam. in said boiler and turbine;a water-cooled condenser into which ',the exhaust from the tifrbinepasses; a connecting pipe'between said condenser and said boiler; meansfor operating said motor by said dynamo; and means for regulating theelectric current to said motor. I

2. The combination of a car platform; trucks therefor; an electric-motorfor driving said trucks; a dynamo on said platform; a steam' 'turbine onsaid platform for driving said dynamo; means for creatin a continuouscirculation in said boiler and turbine .a

water-eooled condenser into which the exhaust from the turbine asses; aconnecting pipe between said concenser and boiler; a

cooling tower onf'said platform; a tank therefor; means for pumping thecontents of sald tank fromsaid condenser into said the fact that due tothe, direct co1'1nection be' cooling tower; meansfor operating saidmotor by said dynamo; and means' for regulat- '1ng the electric currentto said niotor.

3 The combination of a car. platform;

trucks therefor; an. electric motor for d'riving said trucks a dynamo onsaid car latformprovided with a plurality of. revo uble .disks united inseries; means carried by said latform. for driving said dynamo; means orcutting out a portion ofsaid disks; and means for operating said motorby said dynamo. I

abacus 4. The combination'of' a car platform; a

steam generator carried thereby; a generator of electricity driven bysaid steam generator a motor in circuit with said generator ofelectricit for moving said platform; a water-coole condenser; and acooling device connected to said condenser.

5. The combination of a car platform; a steam generator carried-thereby;a generator of electricitydriven by said steam gens erator; a motor incircuit with said generator of electricity; a Water-cooled condenser; acoohng device connected to sand condenser and wings extending from saidcooling dea} vice adapted to provide a current of air through saidcooling device by the movement of the car.

denser is ejected; means for cooling said 25 water as it asses over saidshelves; a tank beneath sai shelves; and a pipe from said tank to saidcondensen,v

Signed by me at Bostoi1,.Mass;, this 20th day'of June,- 1907.

.ERNEST' C. KETCHUM.

Witnesses:

EDNA C. CLEVELAND, NATHAN C.LOM.BABD.

